Thermochromic behavior of tellurite glasses

M. Çelikbilek; A. E. Ersundu; E. O. Zayim; S. Aydin

doi:10.1016/j.jallcom.2015.03.013

Thermochromic behavior of tellurite glasses

M. Çelikbilek, A. E. Ersundu, E. O. Zayim, S. Aydin^*

^*Corresponding author for this work

Department of Physics Engineering

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Thermochromic behavior of tellurite glasses in the TeO₂-WO₃-A₂O (A₂O, A = Li, Na, K) system was investigated. Transmittance in visible region, absorption edge and optical band gap energy were determined at different temperatures below glass transition temperature. Reversibility of thermochromic behavior was tested using repeated heating and cooling measurements. The absorption edge values shifted towards longer wavelengths with increasing temperature and shift rate of absorption edge was found in the range of-3.94 × 10^-4 and-8.86 × 10^-4 eV/K similar to those of conventional semiconductor materials. Band gap energy values were found to decrease with increasing temperature lying in the range 1.81-2.83 eV. Tellurite glasses showed reversible thermochromic behavior and expected to find use in thermochromic applications. Good semiconducting property of tellurite glasses is found to be the cause of thermochromism.

Original language	English
Pages (from-to)	162-170
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	637
DOIs	https://doi.org/10.1016/j.jallcom.2015.03.013
Publication status	Published - 15 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Funding

The authors of this study gratefully acknowledge The Scientific & Technological Research Council of Turkey (TUBITAK) for the financial support under the project numbered 111M236.

Funders	Funder number
Scientific & Technological Research Council of Turkey
TUBITAK	111M236

Keywords

Absorption edge
Band gap energy
Semiconductor
Tellurite glasses
Thermochromism

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10.1016/j.jallcom.2015.03.013

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title = "Thermochromic behavior of tellurite glasses",

abstract = "Thermochromic behavior of tellurite glasses in the TeO2-WO3-A2O (A2O, A = Li, Na, K) system was investigated. Transmittance in visible region, absorption edge and optical band gap energy were determined at different temperatures below glass transition temperature. Reversibility of thermochromic behavior was tested using repeated heating and cooling measurements. The absorption edge values shifted towards longer wavelengths with increasing temperature and shift rate of absorption edge was found in the range of-3.94 × 10-4 and-8.86 × 10-4 eV/K similar to those of conventional semiconductor materials. Band gap energy values were found to decrease with increasing temperature lying in the range 1.81-2.83 eV. Tellurite glasses showed reversible thermochromic behavior and expected to find use in thermochromic applications. Good semiconducting property of tellurite glasses is found to be the cause of thermochromism.",

keywords = "Absorption edge, Band gap energy, Semiconductor, Tellurite glasses, Thermochromism",

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AU - Çelikbilek, M.

AU - Ersundu, A. E.

AU - Zayim, E. O.

AU - Aydin, S.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - Thermochromic behavior of tellurite glasses in the TeO2-WO3-A2O (A2O, A = Li, Na, K) system was investigated. Transmittance in visible region, absorption edge and optical band gap energy were determined at different temperatures below glass transition temperature. Reversibility of thermochromic behavior was tested using repeated heating and cooling measurements. The absorption edge values shifted towards longer wavelengths with increasing temperature and shift rate of absorption edge was found in the range of-3.94 × 10-4 and-8.86 × 10-4 eV/K similar to those of conventional semiconductor materials. Band gap energy values were found to decrease with increasing temperature lying in the range 1.81-2.83 eV. Tellurite glasses showed reversible thermochromic behavior and expected to find use in thermochromic applications. Good semiconducting property of tellurite glasses is found to be the cause of thermochromism.

AB - Thermochromic behavior of tellurite glasses in the TeO2-WO3-A2O (A2O, A = Li, Na, K) system was investigated. Transmittance in visible region, absorption edge and optical band gap energy were determined at different temperatures below glass transition temperature. Reversibility of thermochromic behavior was tested using repeated heating and cooling measurements. The absorption edge values shifted towards longer wavelengths with increasing temperature and shift rate of absorption edge was found in the range of-3.94 × 10-4 and-8.86 × 10-4 eV/K similar to those of conventional semiconductor materials. Band gap energy values were found to decrease with increasing temperature lying in the range 1.81-2.83 eV. Tellurite glasses showed reversible thermochromic behavior and expected to find use in thermochromic applications. Good semiconducting property of tellurite glasses is found to be the cause of thermochromism.

KW - Absorption edge

KW - Band gap energy

KW - Semiconductor

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KW - Thermochromism

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JF - Journal of Alloys and Compounds

ER -

Thermochromic behavior of tellurite glasses

Abstract

Bibliographical note

Funding

Keywords

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